Computer Science – Numerical Analysis
Scientific paper
May 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975a%26a....40..303m&link_type=abstract
Astronomy and Astrophysics, vol. 40, no. 3, May 1975, p. 303-310.
Computer Science
Numerical Analysis
117
Convective Flow, Mixing Length Flow Theory, Stellar Evolution, Stellar Structure, Astronomical Models, Equations Of Motion, Iterative Solution, Numerical Analysis, Stellar Mass
Scientific paper
Boundaries of and overshooting from stellar convective cores are investigated. Convection in stellar cores is calculated explicitly with nonlocal expressions of the mixing-length formalism, and an iterative process is proposed for the simultaneous integration of the equations of stellar structure and those describing convective motions. This method is applied to a chemically homogeneous model of a star of two solar masses. The results show that the zone of overshooting extends over 15 per cent of the mixing length, that changes by a factor of two or more in the efficiency factors of the mixing-length formalism do not have very much effect on overshooting, and that the location of the zero-age sequence for a given chemical composition is not modified by overshooting from convective cores.
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